code: def test_type_decl_concrete(self):
      self.assertEqual(dshape("3, int32"), dshape("type X = 3, int32"))
  
imports: from __future__ import absolute_import, division, print_function
  import ctypes
  import unittest
  import pytest
  from datashader import datashape
  from datashader.datashape import dshape, error, DataShape, Record
label_desc: Use image node_id 8 for calling the TestDataShapeCreation obj's underlying member method code with example usage: obj.test_type_decl_concrete() without return types